Gumming and creasing mechanism



Dec. 6, 1927.

A. NOVICK GUMMING AND CREASING MECHANISM Filed April 12, 1925 2 Sheets-$heet l JfirajzavzJVovick; MW

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Dec. 6, 192 7.

A. NOVICK GUMMING AND CREASING MECHANISM Filed April 12, 1923 2 Sheets-Sheet I his Atafnqy.

Fetented Dec. 6,- 192?.

UNHED STATES FATET FFICE.

ABRAHAM NOVICE, OF BROOKLYN, NEW YORK, ASSIGNOB. T F. LSMITHE MACHINE COMPANY, INCORPORATED, 01F YORK, N. Y.. A CORPORATION OF NEW YORK.

curanrne AND cnnesrne Mechanism.

Application filed April 12, 1923. Serial No. 631,575.

This invention relates to gumming and creasing mechanisms, and the object of my improvements is to provide a device of the character specified simple in construction and eflicient in operation at high speed. A further object is to provide a mechanism which operates to take and apply gum only in the presence of an article to be gummed. Other features of improvement will be set forth later herein.

fMy improvements, while applicable to a wide variety of uses, are, by way of illustration, shown in the accompanying drawings as designed particularly for gumming an creasing the seal flaps of envelopes. Therein:

Figure 1 is a side elevation partly in section on line 1, 1 of Fig. 4 of the preferred embodiment of my improvements. Fig. 2 is a fragmentary side elevation, partly in section, of a portion of what is shown in Fig. 1, the section being taken on line 2, 2 of Fig. 4:. Fig. 3 is a fragmentary side elevation on line 3, 3 of Fig. 4. Fig. 4 is a plan view corresponding with what is shown in Fig. 1, look ing in the direction of arrow 4 thereof. Fig. 5 is a fragmentary side elevation of a modification of a portion of What is shown in Fig. 1. Fig. 6 is a plan view corresponding with Fig. 5, looking in the direction of arrow 6 thereof. The several views are to the same scale.

Numerous devices for accomplishing the general results of gumming and creasing, such as produced by the present mechanism, are known in this long established art, but

those previous devices are particularly adapted for relatively slow operating mechanisms. The problems connected with the handling of frail paper envelopes at very high speed,

eral envelopes before the mac ine is stopped for cleaning. In the present device the gummer is normally out of engaging rela= tion and is positively held in such idle position until brought into operation by the actual presence of an envelope against said feeler finger; If this mechanism fails to function, the only result is a failure to gum the envelope and even if several envelopes in succession fail to be gummed, those envelopes are not spoiled but may again be fed through the machine after any failure of the machine to function has been corrected. In a high speed machine this feature is highly economical and dependable.

My improved mechanism may be conveniently supported by side frames 4, 5, in which the several shafts have bearings. Gum box 6 having the usual roll 7 therein is mounted on cross bar 8 reaching from frame 4: to

frame 5. Said roll 7 may be rotated by belt 9 from a pulley of known character on the machine, not shown. Gum transfer roll 10, carried by arms 11, 12 fixed to shaft 13, is oscillated from contact with gum roll 7 to. engaging position relatively to gummer 88%" ment 14, by means of cam 15 fixed to sha t '16, through roll 17 carried by arm 11, and pull spring 18 is eficient for keeping said roll in contact with said cam.

. Glimmer segment 14: is adjustably mounted on plate 19 carried by roll 20 fixed to shaft 16. Said plate 19 is mounted for movement toward and away from shaft 16 and is guided in said movement by the bodies of screws 21,21 and the heads of those screws Fig. 1. Arms 24, 25 are fixed to shaft 23, near opposite ends thereof and reach inwardly to the right, Fig. 1, and are connected by links 26, 27 with opposite ends, respectively, of plate 19. Also the connections between said arms and links preferably have a slight amount of play therein so that gummer segment 14 may adjust itself freely when coacting with face 52 of roll 50.

Fixed to shaft 23 and depending there from, Fig. 1, is toe 28 for engagement with trigger 29 fixed to rock shaft 30. For-resetting toe 28 into engagement with trigger 29 after said trigger has been withdrawn from supporting said toe, fixed cam 31 engages roll 32 carried by arm 33 fixed to shaft 23. The springs under plate 19 are eficient for holding said roll in engagement with said 'cam. Said cam 31 is adjustably mounted on sleeve 34 in reaching from frame 4, about shaft 16. At each rotation of roll 32 about cam 31 toe 28 is lifted slightly from engagement with trigger 29, thus relieving said trigger from the pressure of said toe. Feeler finger 35 is fixed to shaft 30 and is provided with work engaging portion 35 normally rojecting beyond the periphery of roll 20. lSaid shaft 30, trigger 29 and feeler finger 35 are further relieved of frictional re-: sistance as follows: Shaft 30 has loose bearings, as 36, in the end frames of roll 20, said bearings being'larger than said shaft, which shaft is hung on opposite arms 37, 38, being supported thereon by small pins, as 39, coaxial with said shaft. Arms 37, 38 are supported on the ends of roll 20 by pivot screws, as 40. In Fig. 1, toe 28, impelled by the springs under plate 19, is forcing trigger 29 to the right and shaft 30 against the right hand side of its bearings, as 36, against the pull of relatively weak springs 41, 42 connecting arms 37, 38 with the ends of roll 20. When the pressure of said toe 28 is released from trigger 29, springs 41, 42, pull g arms 37, 38 to the left against'stop pins, as 43, and shaft 30 is moved to the middle of its bearings, as 36, in the ends of roll 20, and free of the walls of said bearings, said shaft being then supported entirely by small pivot pins as 39, whereby a very sllght pressure against feeler finger 35 will rotate shaft 30 and swing trigger 29 downwardly from behind toe 28 Fig. 1. Y

Roll fixed to shaft 44 for rolling coaction with roll 20, is provided with one or more, but preferably two, yieldable segments,

' 45, 46, pivotall mounted on studs as 47, be-

low the perip eral boundary of said roll. Said segments have facial contours, respectively, in coincidence with the periphery of said roll when those segments are in retracted positions. Rolls 50 and 20 are not in actual rolling contact but are spaced apart slightly and, normally, when no sheet or envelope is therebetween, segments 45, 46 swing out from roll 50 into engagement with roll 20, see dotted position, Fig.1. Said segments are urged outwardly by pull springs as 48, connecting overhanging leading ends, as 49, of said segments with the hub of said roll. Said segments are limited in their outward movements by adjustable stop screws, as 51, undertheir overhanging ends, as 49. Said roll 50 is provided with yieldable segmental face 52, preferably of rubber, for coaction with gummer segment 14 of roll 20. Adjacent gummer segment 14 on roll 20 and between said segment and the upstanding end of feeler finger 35 is creaser blade 53, spring mounted to yield slightly circumferentially of roll 20. Roll 50 has a lengthwise pocket for receiving said blade 53, said pocket lying between abutment 54 and swinging clamp bar 55. Said bar 55 is fixed in shaft 56 having bearings in roll 50 and said bar is moved toward abutment 54 at suitable times to squeeze a sheet or envelope thrust into said pocket by creaser blade 53', by means of cam 57, through roll'58 carried by arm 59 fixed to said shaft 56. Roll 58 is urged to engagement with cam 57 by pull spring 60 connecting collar 61 of shaft 56 with the hub of roll 50. Cam 57 is a still cam and is adjustably fixed to sleeve 91 in.- reaching from frame 4 about shaft 44.

Above rolls 20, 50 are small feed rolls 62. 63, the former of which has spring pressed bearings and the latter of which has fixed bearings, all in side frames 4, 5, respectively. These small rolls are efiicient for feeding the sheets or envelopes to the bite of rolls 20, 50 and rotate at the same surface speed as said rolls.

The. gearing for operably connecting the several shafts of myv improved mechanism is as follows: Assuming shaft 64 to be the driving shaft, gear 65 fixed thereto meshes with gear 66 fixed to shaft 44 of roll 50 and that ear in turn meshes with equal gear 67 fixed to shaft 16 of roll 20. On that end of shaft 44 opposite gear 66, gear 68 meshes with gear 69 fixed to shaft 70 of small roll 62', and fixed on that end of shaft 70 near frame 5, gear 72 meshes with equal gear 73 fixed to shaft 71 of small roll 63.

The operation of my improved device is as follows: Main shaft 64 being started to rotate in clockwise direction, small rolls 62, 63 are rotated in the direction of their respective arrows and a sheet or envelope is delivered thereto in proper timing, prefmemes the envelope. Referring now to Fig. 2, it will be observed that roll 32 is just about to reach the high part of cam 31 and said roll will reach that high part of said cam before finger 35, Fig. 1, engages the envelope, whereby toe 28 fixed to shaft 23 to which arm 33 of roll 32 is also fixed, will be lifted off from trigger 29, thereby permitting free and unhampered operation of feeler finger 35 by the frail envelope, except as resisted by very weak spring 74. Said feeler finger is further relieved of frictional resistance by springs 41, 42 which now draw arms 37, 38 to the left against their respective stop pins, as 43, whereby shaft 30 will be lifted free of its loose bearings, as 36, in the ends of roll 20 and said shaft with trigger 29 and feeler finger 35 will be lightly supported by the pins, as 39, in arms 37, 38. Feeler finger 35 now rotates with roll 20 into engagement with the envelope and is pressed back into roll 20 thereby against the pull of weak spring 74. Trigger 29 is thereby swung out from behind toe 28 and as roll 32 passes down ofi the high part of cam 31 said toe 28 swings toward shaft 16 over trigger 29 and springs 22 under plate 19, force gummer segment 1.4 outwardly ready to engage the flap of the envelope as that flap passes down be tween said gummer segment and yieldable face 52 of roll 50. Immediately before the gumming operation, creaser 53 will press that transverse portion of the envelope flap adjacent the body thereof into the opening between abutment 54 and blade 55 on roll 50, and roller 58 will ride to the high part of cam 57, Fig. 2, whereby blade 55 will squeeze the envelope against creaser 53 and against abutment 54 thereby setting the crease,the yieldable mounting of creaser 53 freely permitting this action. Before the envelope passes from engagement with rolls 20, 5O feeler finger 35 will pass out of engagement with the envelope and spring 74.

will ull trigger 29 against the end of toe 28 w ere it will rest until roll 32 climbs the high part of cam 31 thereby swinging said toe away fromshaft 16'suficiently to permit the entrance of said trigger therebehind.

Previous to such resetting of said toe and trigger and while gummer segment 14 is in its outward position, roll 17 reaches the low part of cam 15, Fig. 3, and gum transfer roll swings to the right into position to be engaged by gummer se ment 14as that.seg ment revolves upwar 1y into rollin contact therewith, thereby taking gum %or its next engagement with an envelope.

In the absence of an envelope between rolls 20, 50, segments 45, 46 of roll 50 remain in their outward positions, as shown by dotted lines in Fig. 1, and feeler finger 35 is not pressed in toward roll 20, thereby leaving trlgger 29 in position to receive toe slightly therefrom by roll 32 on cam 31, whereby gummer segment 14 .is not permitted to move outwardly into operative position and, as it revolves, opposite yieldable .face 52 will not smear that face with gum,

28 thereagainst after said toe is liftednor will said segment take gum from roll 10 ,end of roll 20 so as to be retractable to below the periphery of said roll. The object of this is to provide more time for gum transfer roll 10 to swing into engaging relation with gum segment 14 and to permit cam 15 to be less steep than otherwise required. Said arms 77 7 8 are fixed to small rock shaft 79 having its bearings in the end walls of said roll 20. Arm 78 has roll 81 pivoted at its free end for engagement with cam 82 fixedto sleeve 83 of bracket 84 in reaching from side frame 5. Blade 76 is urged toward shaft 16 and roll 81 is urged to engagement with cam 82 by pull of spring 85. Said spring is also eficient for holding blade 76 yieldably in radial position. The operation of this modification will be apparent. Suflice it to state that when roll 81 rises to the high part of cam 82 blade 76 will be forced outwardly, radially beyond the face of roll 20 into engaging position with the creasing means in roll 50.

T claim:

1. In a mechanism of the character described the combination of a rotating roll, a gummer segment mounted in said roll for movement toward and from the axis of said roll, means for urging said gummer segment away from said axis, means for holding said gummer segment normally in retracted position relatively near said axis, a feeler finger operatively mounted in said roll and having a Work engaging portion normally projecting beyond the periphery of said roll, means governed by the movement of said feeler finger work engaging portion toward said roll periphery for releasing said gummer segment for movement away from the axis of said roll, and means for resetting said gummer segment in retracted position.

2. In a mechanism of the character described the combination of a rotating roll, a gummer segment mounted in said roll for movement toward and from the axis of said roll, a rockshaft mounted in said roll, a toe fixed, to said rockshaft, a feeler finger operatively mounted in said roll and projecting beyond the periphery of said roll, a trigger carried by said feeler finger for engagement with said toe, means operably connecting said toe and said gummer segment,

engagement with said toe being operable for holding said gummer segment in retracted position, said feeler finger when defixed to said rockshaft, a feeler finger operatively mounted in said roll and projecting beyond the periphery of said roll, a trigger carried by said feeler finger for engagement with said toe, means operably connecting said toe and said gummer segment, a cam fixed relatively to said rotating roll, an arm fixed to said rockshaft and having means engaging said cam, said cam being adapted at each rotation of said rotating roll to oscillate said rockshaft and lift said toe free of said trigger, means for urging said gummer segment away from said axis and said rockshaft arm to engagement with said cam, said trigger when in engagement with said toe being operable for holding said gummer segment in retracted position, said feeler finger when depressed toward said roll periphery being operable for swinging said trigger from engagement with said toe whereby said gummer segment is released for movement away from the axis'of said roll, and means for urging said feeler finger outwardly from said roll andsaid trigger under said toe, said cam being eflicient through said arm and rockshaft for resetting said toe into engageable position relatively to said scribed the combination of a rotating roll,-

trigger.

4."In a mechanism of the character described the eombination of a rotating roll, a gummer segment mounted in said roll for movement toward and from the axis of said roll, a rockshaft mounted in said roll, a toe fixed to said rockshaft, a feeler finger operatively mounted in said roll and projecting beyond the periphery of said roll, a trigger carried by said feeler finger for engagement -with said toe, means operably connecting said toe and said gummer segment, a cam fixed relatively to said rotating roll, an arm fixed to said rockshaft and having means engaging said cam, said cam being adapted at each rotation of said rotating roll to oscillate said rockshaft and lift said toe free of said trigger, means for urging said gummer segment away from said axis and said rockshaft arm to engagement with said cam, said trigger when in engagement with said toe being operable for holding said gummer segment in retracted position, said feeler finger when depressed toward said r011 periphery being operable for swinging said trigger from engagement with said toe whereby said gummer segment is released for movement away from the axis of said roll, a shaft mounted for oscillation in loose bearings in said roll, said shaft being supported by 0 posite arms pivoted to said r0 1, said feeler finger and trigger being fixed to said shaft, means for urging said shaft from engagement with said loose bearings, said means being operable when said toe is lifted from said trigger, and means for urging said feeler finger outwardly from said roll and said trigger under said toe, said cam being efiicient through said arm and rockshaft for resetting said toe into engageable position relatively to said trigger.

5. lln a mechanism of the character described the combination of a rotating roll, a gummer segment mounted in said roll for movement toward and from the axis of said roll, means for urging said gummer segment away from said axis, means for holding said gummer seent normally in retracted position relatively near said axis, a shaft mounted for oscillation in loose bearings in said roll, said shaft. being supported by opposite arms pivoted to said roll, a feeler finger fixed to said shaft and having a work engaging portion normally projecting beyond the periphery of said roll, means governed by the movement of said feeler finger work engaging portion toward said roll pe riphery for releasing said gummer segment for movement away from the axis of said roll, means operable during a portion of the rotation of said roll for relieving said shaft from engagement with said loose bearings, and means for resetting said gummer segment in retracted position.

6. In a mechanism of the character dea member mounted in said roll for movement relatively thereto, a shaft mounted for oscillation in loose bearin s in said roll, said shaft being supported y opposite arms pivoted to said roll, a feeler finger fixed to said shaft, means carried by said shaft for restraining said movable member normally against movement in one direction, means for urging said movable member in said direction against said restraining means and said shaft against its loose bearings, means operable during a rtion of the rotation of said roll for relieving said holding means on said shaft from engagement with said movable member whereby said feeler finger shaft is freed from engagement with its loose bearing and whereby said feeler is free to turn on its pivotal connections with said arms.

7. In a mechanism of the character described the combination of rotating means, a gummer mounted on said rotating means for movement toward and from the axis of said rotating means, said gummer being normally held in a non-operating position, a

acemes feeler finger mounted on said'rotating means for causing the release of said gummer into an operating position, and means for resetting said gummer and said feeler finger.

8. In a mechanism of the character described the combination of a rotating roll, a gummer segment mounted 'thereon for movement toward and away from the axis of said roll, means for holding said gummer normally. in a non-operating position, a feeler finger for causing the release of said er segment into an operating position,

. a second rotating roll for coacting with said first rotating roll, a yieldable segmental face covered with a resilient material mounted on said second roll for coacting with the gummer segment, and means for resetting said gummer segment into its retracted nonoperating position.

9. In a mechanism of the character described, the combination of a rotating roll, a dgummer segment mounted. thereon for ra ia-l movement, means for holding said gummer ent in its normal retracted position, eeler finger having a portion extending beyond the periphery of said roll, a second rotating roll, a plurality of yieldable segments pivotally mounted on said second roll capable of swinging out from said roll for coaction with said first roll, said segments being efiective in forcing the extending portion of the said feeler finger inward to cause the release of the said gummer when an envelope is between the two said rolls, and means for resetting said gummer seggumming segment in one part of the cycle thereof, means operated by engagement with a blank for causing the segment to be projected to its outward position for engagement with the work, and means invariably operating in each cycle to retract the segment after it has passed the gum applying means and to cause it to be locked in such position until again caused to be projected by operation of the blank engaging'means.

11. In a blank gumming apparatus, a roll, a gumming segment carried thereby, spring means urging the segment outward to a work engaging position, a latch for retaining the segment in a retracted position to escape engagement with the work, a work engaging member for withdrawing 'tli e latch, and means for relieving the latch of pressure tending to produce frictional opposition to the movement thereof, concurrently with the arrival or presence of the work engaging member in work engaging position.

In witness whereof, I hereby afix my signature this 10th day of April, 1923.

= novron. 

